Bard Epic and Velious haste stacking

[Erica]

Does anyone here know for sure how the haste stacking will work in Velious, and what exactly the cap is? It is my understanding that "V1" haste, "V2" haste, and "Worn" haste all stack in Velious. The bard epic haste is listed as V1, but in the wiki it states "Dance of the Blade is V1 Haste and does not stack with other haste songs or spells."

Is this only accurate until Velious comes out? Basically I am wondering if epic haste buff + bard song will stack, which I don't see why it wouldn't. Also, what is the haste cap of everything combined? 100%?